Question

if A: B = 2 : 3 and B: C= 4: 5 then A:B: C is equal to what

Answer 1

Given that ratio of A: B = 2:3.

Given that ratio of B:C = 4:3

                                      = 4: 3/4: 5:3/4

                                      = 3:15/4


Ratio of A:B:C = 2:3:15/4

                         = 8:12:15.


Hope this helps!

Answer 2

Given,
A : B = 2 : 3
B : C = 4 : 5

Here the parts of B are 3 ,4 whose LCM would be 12 .

Now, A : B = 2 *4 : 3 *4 = 8 : 12
B : C = 4 * 3 : 5 * 3 = 12 : 15 .

Now B has some part in both so.

A : B : C = 8 : 12 : 15 .